The Fokker G.I was a Dutch heavy twin-engined fighter plane comparable in size and role to the German Messerschmitt Bf 110 and the British Mosquito. The G.I was intended for the role of air cruiser, patrolling the air space and denying it to enemy planes, especially bombers. The Fokker G.I could also be used for ground attack and light bombing missions.
Besides the Dutch air force, several foreign air forces showed an interest in the G.I. The aircraft was originally built to a French Air Force specification, but the French preferred French-built aircraft such as the Breguet 69. The Spanish Air Force ordered 36 aircraft. After the mobilisation of 1939, these single seat versions were taken over by the Dutch air force. The Danish ordered 12 G.Is for use as dive bombers. These were to be built under license, and were not completed because of the German invasion. Other interested countries were Sweden (17 ordered), Belgium, Turkey, Hungary and Switzerland. Due to the German attack on the Netherlands, no aircraft were delivered to these countries.
When Nazi Germany invaded the Netherlands on May 10, 1940, 23 of these G.Is were operational. The German invasion started with an attack on the Dutch airfields; one squadron was almost completely destroyed on the ground. By the end of the day only one G.I was in still available. Several G.Is were captured by the Germans and used as trainers for Me-110 crews. There are no cases known of German G-Is participating in combat.